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Finding the Fourth Proportional to 262,113, 392,670.76 and 135,563.64

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Solution

The fourth proportional to 262,113, 392,670.76 and 135,563.64 is: 203,087.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,113 : 392,670.76 = 135,563.64 : x
  2. Step 2: Convert to fraction form
    262,113/392,670.76 = 135,563.64/x
  3. Step 3: Cross multiply
    262,113x = 392,670.76 × 135,563.64
  4. Step 4: Simplify right side
    262,113x = 53,231,877,547.17
  5. Step 5: Solve for x
    x = 53,231,877,547.17/262,113
  6. Step 6: Final answer
    x = 203,087.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.